ANSI ASTM F2120-2006 Standard Practice for Testing Treestand Load Capacity《测试树顶支架负荷能力惯例》.pdf

1、Designation: F2120 06 (Reapproved 2014) An American National StandardStandard Practice forTesting Treestand Load Capacity1This standard is issued under the fixed designation F2120; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, th

2、e year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice provides guidance for testing the loadcapacity of treestands.1.2 The values stated are in inch

3、-pound units and are to beregarded as the standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of

4、regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2F2125 Test Method for Treestand Static Stability and Adher-enceF2126 Test Method for Treestand Static Load CapacityF2128 Test Method for Treestand Repetitive Loading Capa-bilityF2531 Test Method for Load Capacity of Trees

5、tand Seats3. Terminology3.1 The terminology and definitions in the referenced docu-ments are applicable to this practice.3.2 Definitions:3.2.1 backbaradjustable component of a climbing tree-stand or handclimber that engages the tree to provide support.3.2.2 climbing treestandtreestand that provides

6、both themeans to ascend the tree, and allow the user to remain at adesired elevation.3.2.3 handclimber, or climbing aiddevice to assist climb-ing with a climbing treestand. A structure that allows the userto support his weight when lifting a climbing treestand with hislegs.3.2.4 non-climbing, fixed

7、position or hang-on treestandtreestand that is secured to the tree at the elevation where it isused. (The user usually ascends the tree by some means andthen lifts the treestand to the desired position and secures it foruse.)3.2.5 platformhorizontal structural area of a treestand onwhich the user st

8、ands and/or places his feet.3.2.6 treestanddevice designed to be affixed to a tree or itsbranches so as to permit an individual to sit or stand thereon forthe purpose of attaining an elevated position from which toobserve, photograph or hunt.4. Summary of Practice4.1 This practice provides guideline

9、s for the selection oftests for the evaluation of the load capacity of treestands inaccordance with manufacturers capacity rating, particularlyfor quality assurance and adequacy of safety factors including:4.1.1 Static load test.4.1.2 Stability and adherence test.4.1.3 Repetitive loading test.NOTE 1

10、Climbing treestands only.4.1.4 Treestand seat loading test.4.1.5 In the event of a repetitive load failure, manufactureris to submit two additional stands for testing for final accep-tance.5. Significance and Use5.1 This practice is provided to develop and maintainuniformity in practices for the eva

11、luation of the load capacityof treestands, particularly with regard to quality assurance andsafety factors.5.2 It is emphasized that the use of these procedures will notalter the validity of data determined with specific test methods,but provides guidance in the interpretation of test results (valid

12、or invalid) and guidance in the selection of a reasonable testprocedure in those instances where no standard exists today.6. Selection of Test Procedures6.1 The following methods are recommended for individualunits and situations:6.1.1 An individual test unit of the specified model shall beselected

13、at random.1This practice is under the jurisdiction of ASTM Committee F08 on SportsEquipment, Playing Surfaces, and Facilities and is the direct responsibility ofSubcommittee F08.18 on Treestands.Current edition approved Sept. 1, 2014. Published November 2014. Originallyapproved in 2001. Last previou

14、s edition approved in 2010 as F2120 06 (2010).DOI: 10.1520/F2120-06R14.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe AST

15、M website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16.1.2 The test unit shall first be visually inspected for anyflaws, defects, missing parts, etc. and any discrepancies sonoted. The test unit shall also be checked, and so note

16、d, toassure that instructions are included with the unit.6.1.3 The initial test performed shall be a repetitive loadingtest in accordance with Test Method F2128.6.1.4 After successful testing as given in 6.1.3, a stabilityand adherence test in accordance with Test Method F2125.6.1.5 After successful

17、 testing as given in 6.1.4, a static loadtest shall be performed in accordance with Test Method F2126.6.1.6 After successful testing as given in 6.1.5, a static loadtest of the treestand seat shall be performed in accordance withTest Method F2531.7. Failure Criterion7.1 During all testing, yielding,

18、 permanent deformation,cracks or other structural defects shall be cause for failure.Visual inspection shall be the main inspection method;however, other non-destructive test methods may be used todetermine if yielding has occurred.7.2 During static stability and adherence testing, the standswill ro

19、tate as the load is applied. No sudden movement of thestand shall occur that could cause the user to lose their balance.8. Keywords8.1 adherence; backbar; climbing aid; platform; treestandAPPENDIX(Nonmandatory Information)X1. Additional InformationX1.1 This practice is provided for use by manufactur

20、ers oftreestands and testing companies. Criteria has been developedfor certification of treestands and this practice is an integralpart of the certification. However, a treestand conforming tothis practice alone does not constitute certification and thosemanufacturers desiring certification must mee

21、t all applicablestandards as a minimum requirement.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent righ

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25、be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 06 (2014)2